5/9:(1/11-5/22)+5/9:(1/15-2/3) Question 5/9:(1/11-5/22)+5/9:(1/15-2/3) in progress 0 Môn Toán Nho 4 years 2020-10-14T15:06:48+00:00 2020-10-14T15:06:48+00:00 2 Answers 108 views 0
Answers ( )
`5/9:(1/11-5/22)+5/9:(1/15-2/3)`
`5/9:(-3/22)+5/9:(-3/5)`
`5/9:(-3/22+ -3/5)`
`-5`
`5/9÷(1/11-5/22)+5/9÷(1/15-2/3)`
`=5/9÷(2/22-5/22)+5/9÷(1/15-10/15)`
`=5/9÷(-3)/22+5/9÷(-9)/15`
`=5/9×(-22)/3+5/9×(-15)/9`
`=(5×(-22))/(9×3)+(5×(-15))/(9×9)`
`=(-110)/27+(-75)/81`
`=(-330)/81+(-75)/81`
`=(-225)/81`
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